Method of and apparatus for treating plastic material.



A. B. HIQLBIG. METHOD OF AND APPARATUS FOligTREATING PLASTIC MATERIAL.APPLICATION rzL fl-n MA! 1;. 1511v 1,049"712 Patented Jan. T -1 ALBINBERTHOLI) HELBIG, 0F FRANHFQRl-O LT EflflMAlN. \GERMATX Y ASSIGNOB TOTHE FIRM OF .FELZZNEH 6'. ZEHGL'ER. 01? FRANK.FQET'QN THE-MAIN. GERMANY.

METHOD OF .KNI') AIPBARATUS FOR TREA'FENG PLABL'IC MATERIAL.

Application filed. Kay 19 fort -on-thelllain. (lcrmnm, v am M olhwriihiw hmi to iw ow-rvomc that. arose from address Vnrrcntrappflmor N'53. haw

Epcclficalion of Leticia Patcni.

L92; niri l ilicv r invented new and iiwfiil lmprnvcnicnh in 1 Methodsof and All lmruius for 'l'muiii': Plastic Mali-rials, of which lhc follwing is a specification. Tho method of lhizi inxcr i-m ri'w f r thepreparation of plaslir iiin-w-- Ahi'llwi for tho purpose of mvrclxrcn-hrinu illi mass hOIHOEEIN'UUfi or for Ml 15 it mning: of masses; f(liliciw -l winking film minions and .lrvinc ilzc um:

Exicrnnlly. tho machine iaiiipl yu-il boars Il certain resemblance to aso ull l liminmill which howcvcr. lacing onl inivmlw! and only suitablefor r shing lmrci whstanccs, has 'nccn modified lo Magi; "ll; for;

the new method. 'lhinew lllii lllll YFIIKI'P over, contains a series ofrotary hum-r5 iiiranged like the Fipokcs of a whorl whii h i talc at avery high which has two opcnings. one for ihc inser- (ion of the crudemass and tho ol'hcr for ill charging the product.

The pe uliar melhoil of opcmlion i.-; chairaflc'i'izcil by (hrcc nmclfczi'im'cs. The mass, in lhc form of lumps. through. a. charging homwr.Tnrlci'ncmh this charging hopper the healer: rouiic ill thrown in spewinsirlc Owing;

such a high rate of SIwHl. for cxainplc 1000 rerolutions pcr minm'c.that the. lumps of clay (for inslancc) lhi'own in cann t hill downbetween the hunters hut are at firq maintained in a stoic of uniformfiolution by the heaters which follow one anothi-r in succession. Eachof the healers now Srlnjim a thin bl'rafum from lhc undcr hill? of thelump of clay by means of il:- from eilcc. the action resembling that ofthe rolar (uttcrs of a planing machine. Those thin shavings aretransported by the hcatcrs from the opening in the hopper into a portionof the machine that is surrounded by a continuous cylindrical wall; andhere these ncrancd'ofi flat slices or plates are brought into powerfulfrictional contact with the surrounding cylindrical wall in conswucn cof the big;

centrifugal force. In lhh-s way each of the slices or cake-like piecescmnplchzly broken down into small flakes. Thine flakes are ihcn carriedonward by tho ax-mt Pinon! Pd Jan. 7. 1913.

. 19M. Eerial No. 828.281.

(1 riiml M "Ylili throng iihi h thcv are pimiwi l lziim niizill vmi'iiiiril under the iorce.

tlw inoi-f. d k; lmriivtcr of the mass and thc high n'clo uii vof l'izilion of thc ham incrs. "lhc piccm i:i, wi from i'hc inlrm iim'wllumps arr forrwi ouiwaml by ilw cclr irifnuiii f rt-4:. 'iul would lllil lo sli k on ilr hulk of th limping homwr. :onl par; iirulm'lytlQfillllr-l rim mini-in why of tho cylindri al working hzsmhci'. "lnxiii? 2!. Haunt 1i roll-Pr ll JF lawn z'ii' wiiigr'wl of liliinnit iilfil forma gwmion of he wall of o i'sof'rw-l. against which rollcr tho lclfiili l olling: or dim-s of clay imgiingzc. ll; the rotary: motion oflhis 'i'ol er lhc sli cs which or! projwhwl again-l 21ml :ulhcrc to it.are mi in tlw cnlcring'z cdgc f l'nc i'i -iriml caving Zllhl are therecarricd on ffiz'lhci in lbw lwnlcm. A, similar pro css goes on during!the escape of tlic fine fiakcs from thv cylindri al casing. If theseflakes in) #inmlv :illowcrl to diswhargzc into areccptuclc. they rcunitcto coherent masses. sincc the tangential velocity of ejection isextremely high and insufficient to cause the i(' j(ct(e(i flakes locoalesce again. In many instunccs this is undesirable. especially whenthe flocruicm form is intended to be eiiilhccd for di vinp: tho clayquickly. In such can. .ihercforc, the. flakes are also allowed toini'pin sie against a rotary drum, com'cycr. hell or the like moving atsuch a \clo ity that the flakes areideposiled singly side by sidewithout hccoming rcunitgxi and these flakes are then detached froin thedrums. by means of a scraper.

The new machine is illustrated in the accompanying drawings. in which"Figure 1 is a. ceniral longitudinal section and Fig. is. a transversesection through the beater mechanism.

a are the heaters which are secured to the I'cvolYinQ' shaft 1) in lhcknown manner; 0 is tlw cylindrical casing which extends coniiniiouslyfrom the, coloring edge a to the wit Edge 6.

j is ihe charging hopper and on the side of this hoopcr that is sitnaledin the direclion of rotation, is mounted Hie iced roller 9 which hikesup tho particles dcluchcrl from tho 12855 by the ljzflalfilia' andprojcclcl in the 11c direction, and feeds them to the entrance edge (1,whereupon the process already described goes on in the section between(i l eahing damn of the separated fragments into fine flakes. Beyond theedge e the flakes travel in the direction indicated by the arrow, on tothe surface of the rotary drum Ii and remain sticking to the said surface untii they are detached h the scraper l1: and fall down one by one.hepar'ticles may be dried in any suitable. orpreferred manner eitherbefore or after removal from said surface.

ltwill be evident that the machine may be modified in various ways,withoutaltering its novel method of action or departing, from the spiritand scope of the claims.

Now what I claim and desire to secure by Letters Patient is thefollowing:

t l l i 1. The process of comnunuting moist plus l tic material whichconsists in slicing the material fr m lumps commiuuting the slices ofmaterial hy limiting and friction. sprcading the moist comminutodparticles over a surface 15lll).- it\lllizlll)' in a single layer wherein the particles do not owrlap, permitting the particles to become drand then removiug them from said surface in such manner that they remainin comminutcd form.

2. In a machine for ct'nnminutiug moist plastic material, thecombination of a casting provided with iulct and outl t opening the thearrangement of said inletand outlet opening being such that the moistplastic material is introduced into the casing radially and projectedtherefrom tangentially with respect to said rotating heaters, atrevoluhle cyiinder arranged to receive the tangentially projectedparticles and means for removing the particles from the surface of saidcylinder in comminuted form.

3. In a machine for connninutin moist plastic material, the combinationof a par- 'ally cylindrical casing provided with inlet and outletopenings, heaters adapted to :gential planc to receive the projectedcomportion of said ca ing between said opening j being cylindrical,lrcutcrs ilXlilllf arranged with respect to said cyliiulrical p rtion othe asing. the ends of said heatcrs being adapted to rotate in closeproximity to the inner surface thereof \vhcreh v moist plastic materialmay he comminutcd thoreljelween,

minutcd particles, said cylinder being adapted to rotate so thatprojected particles strike on StIt'('t? Sl\'t portions of the surfacethereof. and means for removing the particlcs from the surface of saidcylinder in such manner that they remain comininuted.

In tcstimony. that I. claim the foregoing as my imcntion. l have signedmy name in prcs'cnco of two witnesses, this eighth day of .\la v. 1911.

'il ncsses: I

J RAN iRUND, CARL GRUND.

